CN117564112A - High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device - Google Patents

High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device Download PDF

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Publication number
CN117564112A
CN117564112A CN202311782715.2A CN202311782715A CN117564112A CN 117564112 A CN117564112 A CN 117564112A CN 202311782715 A CN202311782715 A CN 202311782715A CN 117564112 A CN117564112 A CN 117564112A
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CN
China
Prior art keywords
wire drawing
wire
unit
sliding
wiredrawing
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Pending
Application number
CN202311782715.2A
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Chinese (zh)
Inventor
曹军
吴雪峰
王东升
周洪亮
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Henan University of Technology
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Henan University of Technology
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Application filed by Henan University of Technology filed Critical Henan University of Technology
Priority to CN202311782715.2A priority Critical patent/CN117564112A/en
Publication of CN117564112A publication Critical patent/CN117564112A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/04—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/12—Regulating or controlling speed of drawing drums, e.g. to influence tension; Drives; Stop or relief mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The application relates to the technical field of wire drawing equipment and provides a high-efficiency sliding-free superfine tungsten wire multi-die wire drawing device. The high-efficiency sliding-free superfine tungsten wire multi-die wire drawing device can produce tungsten wires with the wire diameters of [0.01,0.08] mm, and the paying-off unit, the straight tube wire drawing unit, the sliding-free wire drawing unit and the wire collecting unit are sequentially arranged along the length direction of the mounting platform; a paying-off tension sensor is arranged between the paying-off unit and the straight tube drawing unit and used for controlling the paying-off speed of the paying-off unit to be matched with the drawing speed of the straight tube drawing unit so as to enable the straight tube drawing unit to carry out sliding drawing on tungsten wires to be processed; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to slip wire drawing; and a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit and used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the non-sliding wire-drawing speed of the non-sliding wire-drawing unit.

Description

High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device
Technical Field
The application relates to the technical field of wire drawing equipment, in particular to a high-efficiency sliding-free superfine tungsten wire multi-die wire drawing device.
Background
Along with the rapid development of the photovoltaic field, the demand for silicon wafers is rapidly increased, and at present, carbon steel cutting wires are mostly adopted for cutting the silicon wafers, so that the silicon wafer utilization rate is improved, higher requirements are made on the thickness and the utilization rate of the silicon wafers, the silicon wafers are required to be thinner, the silicon wafers cut by a single silicon ingot are more, and further, the requirements on finer wire diameter and higher strength are provided for the cutting wires.
The tungsten alloy wire (namely the tungsten wire) has the characteristics of high strength (the breaking force of the tungsten alloy wire with the wire diameter of 0.035mm is more than or equal to 5.0N), good plastic deformation capability (the wire can be processed to 0.020-0.030 mm) and the like, and is an ideal material for preparing the cutting wire as a matrix. However, for cutting wires, not only a high strength index is required, but also a monofilament length of not less than 5 km is ensured.
The index of the silicon chip cutting wire puts out higher requirements on the tungsten alloy wire processing process, particularly in the filament processing stage, the tungsten alloy wire is required to have higher precision, better surface quality, longer length and larger ring diameter, the traditional tungsten alloy wire filament drawing machine adopts sliding wire drawing, and the wire breakage rate is increased in the large-length tungsten alloy wire processing process due to higher strength of the tungsten alloy wire and larger abrasion of a die, so that the surface quality is rough, the high-strength tungsten alloy wire with large length and high dimensional precision cannot be obtained, and the application of the tungsten alloy wire in the silicon chip cutting fields such as photovoltaics, semiconductors and the like is seriously influenced. Improving the processing precision of the superfine tungsten alloy wire and reducing the wire breakage probability is a problem to be solved in the processing of the high-strength tungsten alloy wire.
Disclosure of Invention
The invention aims to provide a high-efficiency sliding-free superfine tungsten wire multi-die wire drawing device, which is used for solving or relieving the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides a high-efficient no slip superfine tungsten filament multimode utensil wire drawing device for the tungsten filament of production line footpath at [0.01,0.08] mm includes: the device comprises a paying-off unit, a straight tube wire drawing unit, a non-sliding wire drawing unit and a wire collecting unit; the paying-off unit, the straight-barrel wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along a first direction; wherein the first direction is the length direction of the mounting platform;
the straight tube wire drawing unit is used for carrying out sliding wire drawing on the tungsten wire to be processed wound on the wire releasing unit; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to the slip wire drawing by the straight tube wire drawing unit; a paying-off tension sensor is arranged between the paying-off unit and the straight tube drawing unit and is used for controlling the paying-off speed of the paying-off unit to be matched with the drawing speed of the straight tube drawing unit; a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit, and the wire-collecting tension sensor is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the wire-drawing speed of the non-sliding wire-drawing unit;
the no-slip wire drawing unit comprises: the wire drawing machine comprises a guide wheel group, a sensor group, a graphite emulsion coating pipe, a wire drawing heating furnace, a wire drawing die seat and a wire drawing wheel group which are sequentially arranged along the first direction;
the guide wheel group comprises a plurality of non-sliding wiredrawing guide wheels which are arranged in parallel along a second direction and have the same diameter, and the sensor group comprises a plurality of wiredrawing tension sensors which are arranged in parallel along the second direction; the wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the second direction, and the wire drawing wheels have the same diameter and operate independently; the plurality of non-sliding wiredrawing guide wheels, the plurality of wiredrawing tension sensors and the plurality of wiredrawing wheels are arranged in a one-to-one correspondence manner along the first direction and are arranged in parallel along the second direction; wherein the second direction is the width direction of the mounting platform; the wire drawing tension sensor is used for controlling the wire drawing speed of the corresponding wire drawing wheel;
the graphite emulsion coating pipe is provided with a plurality of graphite emulsion overflow holes, and the wire drawing die seat is provided with a plurality of wire drawing dies; the plurality of graphite emulsion overflow holes and the plurality of wire drawing dies are in one-to-one correspondence with the plurality of wire drawing wheels along the first direction, and are uniformly distributed in parallel along the second direction.
Preferably, a plurality of the drawing wheels are mounted on a multistage drawing shaft, and the multistage drawing shaft comprises: the hollow wire drawing shafts are sleeved one by one in a rotating way, the lengths of the sleeved hollow wire drawing shafts are sequentially reduced along the radial direction, and two ends of the inner hollow wire drawing shaft extend out of two ends of the outer hollow wire drawing shaft; the innermost hollow wire drawing shaft is sleeved on the solid wire drawing shaft in a rotating way along the radial inward direction, and two ends of the solid wire drawing shaft respectively extend out of two ends of the innermost hollow wire drawing shaft; the wire drawing wheel is arranged at one end of the hollow wire drawing shaft, and each hollow wire drawing shaft and each solid wire drawing shaft are driven by an independent servo motor.
Preferably, the hollow wire drawing shaft and the solid wire drawing shaft are respectively in driving connection with the corresponding servo motor through bevel gear transmission.
Preferably, the wire drawing heating furnace is an electric heating furnace with adjustable temperature, and the heating temperature is less than or equal to 1000 ℃.
Preferably, the wire drawing heating furnace is mounted on the mounting platform through a movable slide rail, and can move along the second direction on the movable slide rail.
Preferably, the wire diameters of the plurality of wire drawing dies are gradually reduced along the second direction.
Preferably, the wire drawing die seat is heated by a resistance wire, and the heating temperature is less than or equal to 600 ℃.
Preferably, the straight tube drawing unit comprises: a sliding wiredrawing guide wheel and a wiredrawing roller which are arranged along the first direction, wherein the sliding wiredrawing guide wheel is arranged close to the paying-off tension sensor, and the wiredrawing roller is arranged close to the non-sliding wiredrawing guide wheel; the plurality of sliding wiredrawing guide wheels are arranged in parallel along the second direction, and the diameter of the sliding wiredrawing guide wheels is the same as that of the wiredrawing roller.
Preferably, the diameters of the wire drawing roller and the wire drawing wheel are the same, and are 60-150 mm, and the surfaces of the wire drawing roller and the wire drawing wheel are sprayed with ceramic.
The beneficial effects are that:
the high-efficient extremely fine tungsten filament multi-die wire drawing device that does not have slip that this application embodiment provided can the production line footpath be at [0.01,0.08] mm's tungsten filament, in this wire drawing device, unwrapping wire unit, straight section of thick bamboo wire drawing unit, no slip wire drawing unit and receive line unit and arrange in proper order on mounting platform along mounting platform's length direction. A paying-off tension sensor is arranged between the paying-off unit and the straight tube drawing unit, and the paying-off tension sensor is used for controlling the paying-off speed of the paying-off unit to be matched with the drawing speed of the straight tube drawing unit, so that the straight tube drawing unit carries out sliding drawing on the tungsten wire to be processed which is wound on the paying-off unit; the non-sliding wire drawing unit is used for performing non-sliding wire drawing on the tungsten wire subjected to sliding wire drawing by the straight tube wire drawing unit; and a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit and is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the non-sliding wire-drawing speed of the non-sliding wire-drawing unit. By means of the method, the primary sliding thick wire drawing is carried out on the tungsten wire to be processed through the straight tube wire drawing unit, the wire diameter of the tungsten wire to be processed is reduced preliminarily, die abrasion in the process of non-sliding wire drawing is reduced, meanwhile, the wire paying-off tension sensor and the wire collecting tension sensor are combined to control the wire collecting and paying-off speed in real time, the subsequent wire breakage in the process of non-sliding wire drawing is avoided, the problems that the wire breakage rate of the ultra-fine tungsten alloy wire is high, the dimensional accuracy is low, the surface quality is poor, the ring diameter is small and the like are effectively solved, and guarantee is provided for preparation and processing of the ultra-fine tungsten alloy wire with high strength and large length.
In the non-sliding wire drawing unit, a guide wheel group, a sensor group, a graphite emulsion coating pipe, a wire drawing heating furnace, a wire drawing die seat and a wire drawing wheel group are sequentially arranged along the length direction of the installation unit. The wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the width direction of the mounting platform and have the same diameter, the wire drawing sensor group comprises a plurality of wire drawing tension sensors which are arranged in parallel along the width direction of the mounting platform, and the wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the width direction of the mounting platform, and the diameters of the wire drawing wheels are the same and operate independently of each other. The plurality of non-sliding wiredrawing guide wheels, the plurality of wiredrawing tension sensors and the plurality of wiredrawing wheels are arranged in one-to-one correspondence along the length direction of the mounting platform and are arranged in parallel along the width direction of the mounting platform. Be provided with a plurality of graphite emulsion on the graphite emulsion coating pipe and spill over the hole, be provided with a plurality of wire drawing moulds on the wire drawing mould seat, a plurality of graphite emulsion spill over the hole, a plurality of wire drawing moulds all correspond with a plurality of wire drawing wheels one by one along mounting platform's length direction, and all follow mounting platform's width direction equipartition side by side. After the tungsten wire preliminarily and roughly drawn by the straight tube drawing unit is guided by the sliding-free drawing guide wheel, the tungsten wire sequentially passes through the drawing tension sensor, the graphite emulsion coating tube and the drawing heating furnace and then enters the drawing die, and then the wire is further drawn by the corresponding independently operated drawing wheel, so that the wire diameter of the tungsten wire preliminarily and roughly drawn is further reduced, and the dimensional precision and the surface quality of the tungsten alloy wire are further improved. Through the cooperation of the wire drawing tension sensor and the wire drawing wheel which independently operates, each pass can be independently controlled when wire drawing is performed, and the sliding in the wire drawing process is effectively avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:
FIG. 1 is a schematic diagram of a high-efficiency slip-free ultra-fine tungsten filament multimode wire drawing device according to some embodiments of the present application;
fig. 2 is a schematic structural view of a multi-stage wire drawing shaft provided according to some embodiments of the present application;
fig. 3 is a partial view of the multi-stage drawing shaft of fig. 2 at C.
Reference numerals illustrate:
1. a pay-off reel; 2. sliding the wiredrawing guide wheel; 3. a graphite emulsion coated tube; 4. a wire drawing heating furnace; 5. a wire drawing die seat; 6. a wire drawing roller; 7. the wire drawing guide wheel does not slide; 8. a wire drawing tension sensor; 9. a wire drawing wheel; 10. a multi-stage wire drawing shaft; 11. a wire winding tension sensor; 12. a take-up reel;
13. a hollow wire drawing shaft; 14. a drive bevel gear; 15. a solid wire drawing shaft; 16. a bearing seat; 17. a fastener; 18. a compacting plate; 19. a rolling bearing; 20. and a bearing end cover.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Various examples are provided by way of explanation of the present application and not limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
The existing tungsten alloy superfine wire processing adopts a sliding type wire drawing device for processing, and in the processing process, firstly, the surface quality of the finished tungsten alloy wire is poor due to the relative sliding in the wire drawing process; secondly, the abrasion of the die is large in the wire drawing process of the tungsten alloy wire, the dimensional change of the die is obvious, the pass reduction rate is changed, and then the wire breakage is caused; thirdly, sliding exists in the wire drawing process, so that stress concentration is increased, and the diameter of the finished extremely-thin tungsten alloy wire ring is too small, so that the subsequent use is affected; fourth, the single-row no-sliding wire drawing dies are arranged in sequence, and a heating furnace is arranged behind each wire drawing die, so that the length of a wire drawing machine is too long, wire fluctuation is serious in the wire drawing process, and the wire breakage probability is increased. These problems seriously affect the processing precision, surface quality and filament length of the ultra-fine tungsten alloy wire, and bring inconvenience to the application of the ultra-fine tungsten alloy wire.
Based on this, this application has proposed a high-efficient no slip superfine tungsten filament multimode utensil wire drawing device, and this wire drawing device is used for the tungsten filament of production line footpath [0.01,0.08] mm. The wire drawing device includes: pay-off unit, straight section of thick bamboo wire drawing unit, no slip wire drawing unit and receipts line unit. The paying-off unit, the straight tube wire drawing unit, the sliding-free wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along the length direction (namely the first direction) of the mounting platform.
And a paying-off tension sensor is arranged between the paying-off unit and the straight tube drawing unit. The paying-off tension sensor is used for controlling the paying-off speed of the paying-off unit to be matched with the wire drawing speed of the straight tube wire drawing unit, so that the straight tube wire drawing unit carries out sliding wire drawing on the tungsten wire to be processed, which is wound on the paying-off unit.
A wire winding tension sensor 11 is provided between the wire winding unit and the non-slip wire drawing unit. The wire-collecting tension sensor 11 is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the wire-drawing speed of the non-sliding wire-drawing unit, so that the non-sliding wire-drawing unit performs non-sliding wire drawing on the tungsten wire which is preliminarily drawn by the straight tube wire-drawing unit, the wire-drawing surface quality and stability are improved, and the wire-drawing die proportion is reduced.
By means of the method, the primary sliding thick wire drawing is carried out on the tungsten wire to be processed through the straight tube wire drawing unit, the wire diameter of the tungsten wire to be processed is reduced preliminarily, die abrasion in the process of non-sliding wire drawing is reduced, meanwhile, the wire drawing and paying-off speed is controlled in real time by combining the paying-off tension sensor and the wire collecting tension sensor 11, the subsequent wire breakage in the process of non-sliding wire drawing is avoided, the problems that the wire drawing breakage rate of the ultra-fine tungsten alloy wire is high, the dimensional accuracy is low, the surface quality is poor, the ring diameter is small and the like are effectively solved, and guarantee is provided for preparation and processing of the ultra-fine tungsten alloy wire with high strength and large length.
In this application, mounting platform adopts platelike structure, is provided with different installing support on platelike structure to corresponding unwrapping wire unit, straight section of thick bamboo wire drawing unit, no slip wire drawing unit and take-up unit of installation. The paying-off unit comprises a paying-off disc 1, a paying-off motor (servo) and the like, wherein tungsten wires to be processed are wound on the paying-off disc 1, the paying-off disc 1 is arranged at the output end of the paying-off motor in a quick connection mode, and the paying-off motor drives the paying-off disc 1 to rotate; the paying-off motor is detachably mounted on the mounting platform through a corresponding bracket.
The paying-off tension sensor is arranged between the paying-off unit and the straight tube wiredrawing unit and consists of a damping motor (servo), an angle sensor and a wire guide wheel. After the tungsten wire to be processed on the pay-off reel 1 passes through the wire guide wheel, the tungsten wire enters a straight tube wire drawing unit for primary sliding rough wire drawing. The relative position of the wire guide wheel in the wire drawing process is measured through the angle sensor, then a damping motor (servo) converts a measured relative position signal into an electric signal, and further the motor rotating speed of the paying-off unit is adjusted to control the stability of the wire drawing process.
In this application, straight section of thick bamboo wire drawing unit is used for carrying out the slip wire drawing to the tungsten filament of waiting to process, waits to process the tungsten filament after the preliminary thick wire drawing of straight section of thick bamboo wire drawing unit, and the wire footpath suitably reduces, can effectively avoid at the wire break of no slip wire drawing in-process, effectively guarantees the processing length of superfine tungsten filament. In a specific example, a straight barrel wire drawing unit includes: the wire drawing roller 6 and the sliding wire drawing guide wheel 2, the sliding wire drawing guide wheel 2 is close to the paying-off tension sensor, and the wire drawing roller 6 is close to the non-sliding wire drawing unit. The plurality of sliding wire drawing guide wheels 2 are arranged in parallel along the width direction (namely the second direction) of the installation platform, that is, the plurality of sliding wire drawing guide wheels 2 are arranged in parallel along the width direction of the installation platform, and the plurality of sliding wire drawing guide wheels 2 are all installed on the same sliding wire drawing shaft and are installed on the installation platform through corresponding brackets.
After the tungsten wire to be processed passes through the wire guide wheel of the paying-off tension sensor, the tungsten wire is circularly wound between a plurality of sliding wire drawing guide wheels 2 and a wire drawing roller 6. The wire drawing roller 6 rotates under the drive of the driving servo motor to realize the sliding wire drawing of the tungsten wire to be processed. Specifically, the wire drawing roller 6 is connected to a roller shaft through a key and a nut, and the roller shaft is connected with a driving servo motor through a coupler.
In the application, the diameter of the sliding wire drawing guide wheel 2 is the same as the diameter of the wire drawing roller 6, and the diameters are 60,150 mm, so that the linear speeds of the sliding wire drawing guide wheel 2 and the wire drawing roller 6 are the same in the wire drawing process, and the stability of tungsten wires is better, so that the breakage of the tungsten wires in the primary rough wire drawing process is effectively avoided; ceramic is sprayed on the surfaces of the sliding wiredrawing guide wheel 2 and the wiredrawing roller 6 so as to effectively increase the hardness, the smoothness and the wear resistance of the sliding wiredrawing guide wheel 2 and the wiredrawing roller 6.
In the straight tube drawing unit, a graphite emulsion coating tube 3, a drawing heating furnace 4 and a drawing die set are arranged in order along a first direction between a sliding drawing guide wheel 2 and a drawing roller 6. Wherein, be provided with a plurality of graphite emulsion on graphite emulsion coating pipe 3 along the second direction and spill over the hole side by side, a plurality of graphite emulsion spill over the hole respectively with a plurality of slip wire drawing guide pulleys 2 one-to-one, the wire drawing in-process, the tungsten filament is come out by slip wire drawing guide pulley 2 after, through graphite emulsion spill over the hole, after the surface is coated with graphite emulsion, get into wire drawing heating furnace 4.
In a wire drawing heating furnace 4, heating tungsten wires by electric furnace wires at a temperature of less than or equal to 1000 ℃; wherein, the temperature of the wire drawing heating furnace 4 can be controlled and regulated in real time. The wire drawing heating furnace 4 is installed on the installation platform through the movable slide rail, and can move along the second direction on the movable slide rail. Therefore, when wire threading is started, the wire drawing heating furnace 4 can be moved away, wire breakage caused by heating the wire is avoided, and when normal drawing is started, the wire drawing heating furnace 4 is moved to heat the wire.
In the straight tube drawing unit, tungsten filament is heated by a drawing heating furnace 4 and then passes through a drawing die on a drawing die seat 5. The wire drawing die seat 5 is provided with a plurality of wire drawing dies in parallel along a second direction, the wire drawing dies are in one-to-one correspondence with the sliding wire drawing guide wheels 2 along the first direction, and the wire drawing dies are arranged in parallel along the second direction. The wire drawing dies are inserted into the die grooves on the wire drawing die holder 5, and the wire drawing diameters of the plurality of wire drawing dies are sequentially increased from front to back in the second direction, so that the wire diameter of the tungsten wire is gradually reduced through multi-pass wire drawing under the action of the plurality of wire drawing dies.
After passing through the wire drawing die (wire drawing die with the smallest wire diameter) at the outermost side in the second direction, the tungsten wire enters a non-sliding wire drawing unit for non-sliding wire drawing, and in the non-sliding wire drawing unit, the wire diameter of the tungsten wire is further reduced through multi-pass non-sliding wire drawing. Wherein, no slip wire drawing unit includes: the wire drawing machine comprises a guide wheel group, a sensor group, a graphite emulsion coating pipe 3, a wire drawing heating furnace 4, a wire drawing die seat 5 and a wire drawing wheel 9 which are sequentially arranged along a first direction.
In this application, the guide wheel set includes a plurality of non-slip wiredrawing guide wheels 7 which are arranged side by side along the second direction and have the same diameter. Specifically, in the second direction, the innermost non-sliding wire drawing guide wheel 7 is aligned with the outermost sliding wire drawing guide wheel 2 in the second direction in the straight tube wire drawing unit. That is, in the second direction, the innermost non-slip wire drawing guide wheel 7 is aligned with the wire drawing die (wire drawing die with the smallest wire diameter) on the outermost side in the second direction in the straight tube wire drawing unit, so that the tungsten wire passing through the wire drawing die (wire drawing die with the smallest wire diameter) on the outermost side in the straight tube wire drawing unit enters the non-slip wire drawing unit, and then passes through the innermost non-slip wire drawing guide wheel 7 in the second direction first.
In the no-slip wire drawing unit, the sensor group includes a plurality of wire drawing tension sensors 8 arranged side by side in the second direction, and the plurality of wire drawing tension sensors 8 are arranged in one-to-one correspondence with the plurality of no-slip wire drawing guide wheels 7 in the first direction and are arranged side by side in the second direction. After passing through the wire drawing tension sensor 8, the tungsten wire passes through a graphite emulsion overflow hole on the graphite emulsion coating pipe 3, the surface of the tungsten wire is coated with graphite emulsion, and then the tungsten wire enters a wire drawing die on the wire drawing die seat 5 after being heated by the wire drawing heating furnace 4. The structural form of the wire drawing tension sensor 8 is the same as that of the paying-off tension sensor, and will not be described in detail here.
In a non-slip wire drawing unit, the wire drawing wheel 9 group comprises a plurality of wire drawing wheels 9 arranged side by side in the second direction, the diameter of the plurality of wire drawing wheels 9 is the same and the wire drawing wheels operate independently of each other. The corresponding wire drawing speed of the wire drawing wheel 9 is controlled through the corresponding wire drawing tension sensor 8, so that no-sliding wire drawing is realized. The plurality of drawing wheels 9 are respectively in one-to-one correspondence with the plurality of graphite emulsion overflow holes arranged on the graphite emulsion coating pipe 3 in the non-sliding drawing unit and the plurality of drawing dies arranged on the drawing die seat 5 along the first direction, and are uniformly distributed in parallel along the second direction. The diameter of the plurality of drawing wheels 9 is 60-150 mm, and the surfaces are coated with ceramics.
In this application, a plurality of wire drawing wheels 9 are installed on multistage wire drawing axle 10, and multistage wire drawing axle 10 includes: the plurality of hollow wire drawing shafts 13 and the solid wire drawing shaft 15 are sleeved in a one-to-one rotating manner, the lengths of the sleeved hollow wire drawing shafts 13 are sequentially reduced along the radial direction outwards, and two ends of the inner hollow wire drawing shaft 13 extend out of two ends of the outer hollow wire drawing shaft 13. The innermost hollow wire drawing shaft 13 is rotatably sleeved on the solid wire drawing shaft 15 in the radial inward direction, and two ends of the solid wire drawing shaft 15 respectively extend out of two ends of the innermost hollow wire drawing shaft 13. The rotary sleeve of the hollow wire drawing shaft 13 and the solid wire drawing shaft 15 is in rotary connection specifically through a rotary bearing. The outermost hollow wire drawing shaft 13 is connected to the mounting platform through a bearing seat.
The wire drawing wheel 9 is arranged at one end of the hollow wire drawing shaft 13, and each hollow wire drawing shaft 13 and the solid wire drawing shaft 15 are respectively driven by separate servo motors. Specifically, the hollow wire drawing shaft 13 and the solid wire drawing shaft 15 are respectively in driving connection with corresponding servo motors through bevel gear transmission. That is, at the end far away from the wire drawing wheel 9, the end parts of the hollow wire drawing shaft 13 and the solid wire drawing shaft 15 are respectively provided with a transmission bevel gear 14, and the transmission bevel gears are driven by corresponding servo motors.
In a specific example, stepped bosses are respectively arranged at two ends of the solid wire drawing shaft 15 and the hollow wire drawing shaft 13, the wire drawing wheel 9 and the transmission bevel gear 14 are respectively in interference fit with the stepped bosses at two ends of the solid wire drawing shaft 15 and the hollow wire drawing shaft 13, and one end of the hollow wire drawing shaft 13 provided with the transmission bevel gear 14 is also provided with external threads so as to further compress the bevel gear on the hollow wire drawing shaft 13 through the threaded fit of the fastener 17.
Meanwhile, the end part of the hollow wire drawing shaft 13 is also provided with a bearing mounting hole, a rolling bearing 19 is mounted in the bearing mounting hole, and the end part of the hollow wire drawing shaft 13 is also connected with a bearing end cover 20 in a threaded manner so as to press the rolling bearing 19 through the bearing end cover 20. On the solid wire drawing shaft 15, the end of one end on which the drive bevel gear 14 is mounted is provided with a threaded blind hole to press the drive bevel gear 14 against the end of the solid wire drawing shaft 15 by a pressing plate 18.
In the non-sliding wire drawing unit, the wire drawing heating furnace 4 is an electric heating furnace with adjustable temperature, and the heating temperature is less than or equal to 1000 ℃; the wire drawing heating furnace 4 is arranged on the mounting platform through a movable slide rail and can move along a second direction on the movable slide rail; the wire drawing diameters of the wire drawing dies are gradually reduced along the second direction, the wire drawing die seat 5 is heated through the resistance wire, and the heating temperature is less than or equal to 600 ℃ so as to effectively prolong the service life of the dies. In the non-sliding wire drawing unit, the graphite emulsion coating pipe 3, the wire drawing heating furnace 4 and the wire drawing die set are the same as or similar to the structure and the installation of the corresponding part in the straight tube wire drawing unit, and are not described in detail herein.
In this application, take-up unit comprises take-up reel 12, receipts line motor (servo) etc. and take-up reel 12 is driven by the receipts line motor, receive the line to the tungsten filament that wire drawing was accomplished after no slip wire drawing unit. In the second direction, the take-up reel 12 is positioned on the same straight line with the wire drawing wheel 9 at the outermost side and the non-sliding wire drawing guide wheel 7, a wire take-up tension sensor 11 is arranged between the take-up reel 12 and the wire drawing wheel 9 at the outermost side, after the wire drawn tungsten wire passes through the wire take-up tension sensor 11, the wire is taken up on the take-up reel 12, and the wire take-up speed is controlled through the wire take-up tension sensor 11 to be matched with the speed of the wire drawing wheel 9, so that non-sliding wire drawing is realized. The wire winding tension sensor 11 is the same as the wire unwinding tension sensor, and will not be described in detail here.
The wire drawing device of this application is fixed in the course of the work with drawing drum 1, will wait to process the tungsten filament in the change silk cup on mounting platform from drawing drum 1 with the head corruption attenuation, then through unwrapping wire tension sensor to after graphite emulsion coating pipe 3, wire drawing heating furnace 4, the wire drawing mould in the straight section of thick bamboo wire drawing unit in proper order, make a round trip winding between slip wire drawing guide pulley 2 and wire drawing cylinder 6, finally get into no slip wire drawing unit after the wire drawing mould of the outermost side in the second direction.
In the non-sliding wire drawing unit, after sequentially passing through the non-sliding wire drawing guide wheel 7, the wire drawing tension sensor 8, the graphite emulsion coating pipe 3, the wire drawing heating furnace 4 and the wire drawing die, the wire drawing unit winds back and forth between the wire drawing wheel 9 and the non-sliding wire drawing guide wheel 7, finally enters the wire collecting tension sensor 11 after passing through the wire drawing die at the outermost side in the second direction, and is collected by the wire collecting disc 12.
The utility model provides a wire drawing device carries out preliminary slip thick wire drawing to the tungsten filament of processing through straight section of thick bamboo wire drawing unit, will wait to process the wire diameter of tungsten filament and carry out preliminary reduction, reduce the mould wearing and tearing to no slip wire drawing in-process, combine unwrapping wire tension sensor, receive line tension sensor 11 simultaneously and carry out real-time control to receiving, unwrapping wire speed, avoid follow-up in no slip wire drawing in-process broken wire, effectively solved extremely fine tungsten alloy wire drawing broken wire rate height, low in dimensional accuracy, the poor surface quality, circle is through little scheduling problem, for high strength, the preparation processing of the extremely fine tungsten alloy wire of long length provides the guarantee.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (9)

1. A high-efficiency sliding-free superfine tungsten filament multi-die wire drawing device is characterized in that the device is used for producing tungsten filaments with the diameter of 0.01,0.08 mm, and comprises: the device comprises a paying-off unit, a straight tube wire drawing unit, a non-sliding wire drawing unit and a wire collecting unit; the paying-off unit, the straight-barrel wire drawing unit, the non-sliding wire drawing unit and the wire collecting unit are sequentially arranged on the mounting platform along a first direction; wherein the first direction is the length direction of the mounting platform;
the straight tube wire drawing unit is used for carrying out sliding wire drawing on the tungsten wire to be processed wound on the wire releasing unit; the non-slip wire drawing unit is used for performing non-slip wire drawing on the tungsten wire subjected to the slip wire drawing by the straight tube wire drawing unit; a paying-off tension sensor is arranged between the paying-off unit and the straight tube drawing unit and is used for controlling the paying-off speed of the paying-off unit to be matched with the drawing speed of the straight tube drawing unit; a wire-collecting tension sensor is arranged between the non-sliding wire-drawing unit and the wire-collecting unit, and the wire-collecting tension sensor is used for controlling the wire-collecting speed of the wire-collecting unit to be matched with the wire-drawing speed of the non-sliding wire-drawing unit;
the no-slip wire drawing unit comprises: the wire drawing machine comprises a guide wheel group, a sensor group, a graphite emulsion coating pipe, a wire drawing heating furnace, a wire drawing die seat and a wire drawing wheel group which are sequentially arranged along the first direction;
the guide wheel group comprises a plurality of non-sliding wiredrawing guide wheels which are arranged in parallel along a second direction and have the same diameter, and the sensor group comprises a plurality of wiredrawing tension sensors which are arranged in parallel along the second direction; the wire drawing wheel group comprises a plurality of wire drawing wheels which are arranged in parallel along the second direction, and the wire drawing wheels have the same diameter and operate independently; the plurality of non-sliding wiredrawing guide wheels, the plurality of wiredrawing tension sensors and the plurality of wiredrawing wheels are arranged in a one-to-one correspondence manner along the first direction and are arranged in parallel along the second direction; wherein the second direction is the width direction of the mounting platform; the wire drawing tension sensor is used for controlling the wire drawing speed of the corresponding wire drawing wheel;
the graphite emulsion coating pipe is provided with a plurality of graphite emulsion overflow holes, and the wire drawing die seat is provided with a plurality of wire drawing dies; the plurality of graphite emulsion overflow holes and the plurality of wire drawing dies are in one-to-one correspondence with the plurality of wire drawing wheels along the first direction, and are uniformly distributed in parallel along the second direction.
2. The high efficiency, slip-free, ultra-fine tungsten wire multi-die wire drawing apparatus of claim 1 wherein a plurality of said wire drawing wheels are mounted on a multi-stage wire drawing shaft comprising: the hollow wire drawing shafts are sleeved one by one in a rotating way, the lengths of the sleeved hollow wire drawing shafts are sequentially reduced along the radial direction, and two ends of the inner hollow wire drawing shaft extend out of two ends of the outer hollow wire drawing shaft; the innermost hollow wire drawing shaft is sleeved on the solid wire drawing shaft in a rotating way along the radial inward direction, and two ends of the solid wire drawing shaft respectively extend out of two ends of the innermost hollow wire drawing shaft;
the wire drawing wheel is arranged at one end of the hollow wire drawing shaft, and each hollow wire drawing shaft and each solid wire drawing shaft are driven by an independent servo motor.
3. The high-efficiency sliding-free ultra-fine tungsten wire multi-die wire drawing device according to claim 2, wherein the hollow wire drawing shaft and the solid wire drawing shaft are respectively in driving connection with the corresponding servo motor through bevel gear transmission.
4. The efficient sliding-free ultra-fine tungsten wire multi-die wire drawing device according to claim 1, wherein the wire drawing heating furnace is an electric heating furnace with adjustable temperature, and the heating temperature is less than or equal to 1000 ℃.
5. The high-efficiency, slip-free, ultra-fine tungsten wire multi-die wire drawing device of claim 4 wherein the wire drawing furnace is mounted to the mounting platform by a moving slide rail and is movable on the moving slide rail in the second direction.
6. The high-efficiency slip-free ultra-fine tungsten wire multi-die wire drawing apparatus according to claim 1, wherein wire diameters of a plurality of said wire drawing dies are gradually reduced in said second direction.
7. The high-efficiency slip-free ultra-fine tungsten wire multi-die wire drawing device according to claim 1, wherein the wire drawing die seat is heated by a resistance wire, and the heating temperature is less than or equal to 600 ℃.
8. The high efficiency, slip-free, ultra-fine tungsten wire multi-die wire drawing apparatus of claim 1, wherein the straight barrel wire drawing unit comprises: a sliding wiredrawing guide wheel and a wiredrawing roller which are arranged along the first direction, wherein the sliding wiredrawing guide wheel is arranged close to the paying-off tension sensor, and the wiredrawing roller is arranged close to the non-sliding wiredrawing guide wheel;
the plurality of sliding wiredrawing guide wheels are arranged in parallel along the second direction, and the diameter of the sliding wiredrawing guide wheels is the same as that of the wiredrawing roller.
9. The efficient sliding-free ultra-fine tungsten wire multi-die wire drawing device according to claim 8, wherein the diameter of the wire drawing roller is the same as that of the wire drawing wheel, the diameters of the wire drawing roller and the wire drawing wheel are 60-150 mm, and ceramics are sprayed on the surfaces of the wire drawing roller and the wire drawing wheel.
CN202311782715.2A 2023-12-22 2023-12-22 High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device Pending CN117564112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311782715.2A CN117564112A (en) 2023-12-22 2023-12-22 High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311782715.2A CN117564112A (en) 2023-12-22 2023-12-22 High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device

Publications (1)

Publication Number Publication Date
CN117564112A true CN117564112A (en) 2024-02-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311782715.2A Pending CN117564112A (en) 2023-12-22 2023-12-22 High-efficiency sliding-free superfine tungsten filament multi-die wire drawing device

Country Status (1)

Country Link
CN (1) CN117564112A (en)

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